Method and apparatus for receiving GPS/GLONASS signals

Abstract

An apparatus for processing received spread spectrum signals modulated with a unique pseudo-random code is disclosed. In one embodiment, the apparatus comprises i) a plurality of channel modules each including a correlator, ii) a circuit configured to hierarchically chain a plurality of the channel modules in series, wherein at least one of a code, control signals and carrier signals is passed from one channel module of the chain to the next, and iii) a selector configured to select the at least one of the code, control signals and carrier signals, to be transmitted to the next channel module in the chain with a delay or without a delay.

1 . An apparatus for processing received spread spectrum signals modulated with a unique pseudo-random code, the apparatus comprising: 
 a plurality of channel modules each including a correlator; and    means for i) hierarchically chaining a plurality of the channel modules in series, and ii) selecting one channel module from at least two candidate channel modules for the next channel module of the chain.